Question
A bag had some silver pens and brown pens in the ratio of 3 : 1. Abi removed 25 silver pens and put another 15 brown pens into the bag. There is now 20% as many silver pens as brown pens in the bag. How many silver pens were in the bag at first?
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A bag had some silver pens and brown pens in the ratio of 3 : 1. Abi removed 25 silver pens and put another 15 brown pens into the bag. There is now 20% as many silver pens as brown pens in the bag. How many silver pens were in the bag at first?